<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<style>
		article{
			width: 500px;
			
			margin:0 auto;
			background-color: #ccc;
			overflow: hidden;
		}

		article div{
			width: 100px;
			height: 100px;
			background-color: red;
			margin:10px;
			float: left;
		}
	</style>
</head>
<body>
	<article>
		<div></div>
		<div></div>
		<div></div>
	</article>
</body>
</html>









